Shbet-stackes



E. CHESHIRE.

SHEET STACKER.

I APPLICATION FILED SEPT- I31 1913. 1 1 94L$$fi t n ed A g. 8,1916.

4 SHEETS-SHEET 1' E. CHESH!RE.

SHEET STACKER.

APPLICATION FILED SEPT. 18. 1913.

Patent-ed Aug. 8, 1916.

4 SHEETSSHEET 2- F/z a E. CHESHIRE.

SHEET STA'CKER.

APPLICATION FILED SEPT-153M913.

nnw 1 9 1 00 g u A d 8 LL n at 3 F 4 SHEETSSHEET 3.

2 a immi pml E. CHESHIRE SHEET STACKER.

APPLICATION FILED SEPT.18, 1913.

ii. 9 11 94Lfi$m Patented Aug. 8, 1916.

4 SHEETSSHEET 4- EDWARD CHESHIRE, 0F PITTSBURGH, PENNSYLVANIA, .e'lSfsl'Cf'l'l'll't 'lIt'i I'd TION OF MICHIGAN.

releases Specification of Letters Patent.

SHEET-STACKEH,

mam:

a. i 3 i H; lPa-een rang 3, illlett'i.

Application filed September 18, 1913. Serial NO. 790,529.

To all whom it may concern:

Be it known that I, EDWARD Cnrsrrnen, .a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Sheet-Smokers, of which the following is a full, clear, conelse, and exact description, reference being" had to the accompanying drawing, forming a part of this specification.

My invention pertains to devices.

Where sheets are delivered one by one upon each other so as to form a pile, and especially where such delivery is effected Incchanically, it is desirable that means be pro-- vided for forming the sheets into a neat pile; and various sheet stacking mechanisms have been devised from time to time with a. view to effecting this.

It is an object of the present invention to improve upon devices of this character.

It is a further object of the invention to provide a simple and ellicient sheet stacking device which will prevent the sheets from piling up to a greater extent at the lower edges than at the top edges when an inclined table is used.

' Other and further objects of the invention will be apparent from the following specification taken in connection with the apsheet stacking 1 pended claims.

I have described in the following specification and shown in the accompanying drawings a sheet stacking device of a kind particularly applicable to a paper feeding and handling mechanism of the kind described in my co-pending application, Serial No. 790,525, filed Sept. 18, 1913. n is to be understood, however that the invention may be embodied in other constructions than that which is described and shown,- and that changes may be made in the details of the construction which is described and shown without exceeding the scope of the invention as defined in the appended claims.

In the drawings: Figure 1 is a plan of a paper feeding and handling device of the kind described in my co-pending' application above referred to, having applied thereto a sheet stacking device constructed in accord ance with my invention; Fig. 2 is a plan oi the sheet stacking device with a portion of the cover plate broken away to disclose the connection between the jogger slides; Fig. 3

sectional. view showing is a section on the line 3--3 of d, loolrmg in the direction of the arrows, showing the majority of the device in rear elevation; is a section taken on the line l--i of liig. 2. looking in the direction of rows; Fig. 5 is a detail. section manner or' sccurii'lg the jogger slides, the-section. being ta line 55 of 2, looking .'0 t e a oi. the arrowsql ig. 0 is a :lra section taken on the line G--G or ing in the direction oi the arrows, f the vertical to; 121-. in rear elevation, the section being taken on the line 7*? of F tion of the arrows; Fig. one of the tapper arms. section on the line 9-9 of 2, looking in the direction of the arrows; and Fig. ll? a perspective view of the tapper act-net slide.

Like reference characters 1' l parts throughout the following specifier and the several figures oi"- the accoin'g drawings.

:t' rring; now particularly to Fig" indicates the frame of a paper :5 eding and handling mechanism the 8 is a detail view of l ig. 9 is a detail Fin character." scribed in my mpending; application above referred to, which mechanism includes a feed frame 11 for feeding sheets one by one from a pile of stock to the platen 19/ of the press. .lhe teed frame 11 receives its move ment from a rockably mounted quadrant which is actuated by a cam i l. The mechanism also includes delivery grippers which take the printed sheets from the platen and drop them one by one upon inclined receiving table 16 formed at the front of the frame 10. lhe sheets thus dropped upon the receiving table are packed in a neat pile by means of the mechanism now being described.

The receiving table 16 (Figs. 2(5) is formed with a transverse guide-way in -which are mounted av pair of jogger slides 17 locked in their adjusted position by means of 2, looking in the direc- Mill ltlti illli set screws 21 with which they are provided. The jogger slide 17 is provided with a pin 22 which extends downwardly through a hole in the receiving table and engages a push rod 23 which is mounted in suitable bearlngs carried by the receiving table. The push rod 23 is forced outward, by means of a spring.

by m ans of a pair of pivoted bell crank levers 26, one arm of each of which engages a notch in. one of the jogger slides. The other arms of the bell crank levers interlock with each other. It will be seen that the bell crank levers 26 serve to .transmit the reciprocating movements of the slide 17 to the slide 18, the slides moving toward and away from each other. The bell crank levers 26 and the jogger slides 17 and 18 are held in place by means of a removable cover plate 27.

The receiving table 16 is formed with a central longitudinal guide-way in which is mounted a slide 28 having a reduced portion 29 for accommodating the cover plate 27. The slide 28 is formed with al finger hole 30 at its rear end for permitting it to be moved easily in the guide-way. A spring 31 is disposed between the slide 28 and the receiving table 16 for frictionally. maintaining the slide in any position to which it may be moved. Mounted on the front edge of the slide 28 is a cross bar 32 having secured thereto a pair: of uprights 33, which form an end stop against which the sheets of paper fall when they are released from the grippers .15.

A vertical tapping device is associated with the uprights 33. This tapping device includes a pair of scissors arms 34 and 35 one of which is pivoted to each of the uprights 33. The arm 34 is formed with a rearwardly' extending tapper projection 36 at its free end. The arm 34 is also formed with a curved slot 37 which receives a pin 38 extending rearwardly from the arm 35. Extending upwardly from the rear end of the pin 38, in a line with the arm 35, is an arm 39having, at its extreme end, a rearwardly extending tapper projection 40. It will be seen that when one or the other of the arms 34 or 35 is rocked about its pivot,

upon a slide 42 which is mounted upon. the cross bar 32 so as to be capable of longitudinal movement with respect thereto; The slide 42 is retained in position by means of a set screw 43 which passes through a slot in the slide 42 and enters the cross bar 32. The "outer end of the slide 42 is engaged by an arm 44 which lies upon the receiving table and is connected at its rear end with the jogger slide 18. It will be seen that when the joggers 20 are moved away from each other, by reason of the cam portion 25 actuating the push rod 23, the tapping projections 36 and fall by reason of the weight of the arms 34 and 35 and the asso' ciated parts. When, however, the joggers 20 are moved toward each other under the action of the spring 24 the arm 44 pushes the slide 42 in a direction to cause the tapping projections to rise.

In the use of the device, the joggers 20 are adjusted by their slides so as to correspond with the width of the sheets and the position in which they are delivered to the receiving table. The slide 28 is likewise adjusted in accordance with the length of the sheets. The side j oggers tap the sheets into proper position, one above the other; and the tapping projections 36 and 40 tap down the front edges of any sheets which may become stacked too high against the uprights 33. It will be noticed that, by reason of the fact that they fall by their weight, the tapper arms adjust themselves automatically to the varying height of the pile of sheets asthe same are delivered to the receiving table.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a sheet stacker, in combination, an inclined receiving table having a sheet-engaging end stop at the lower part'thereOf, and a vertical tapping device associated with said end stop.

2. In a sheet stacker, the combination with an inclined table having a fixed sheetengaging end stop at the lower part thereof, of a pair of oppositely disposed side j oggers, means for causing said joggers to recipro cate simultaneously in opposite directions; and a vertical tapping device associated with said end stop to operate upon the sheets in engagement therewith.

3. In a sheet stacker,' the combination with an inclined table, of a pair of oppositely disposed side joggers slidably mounted thereon, means for causing said joggers to .reciprocate simultaneously a vertical tapping device disposed on said table below said joggers, and means associated with said joggers for operating said tapping device.

1 4. In a sheet stacker, the combination with an inclined receiving table and means for delivering sheets thereto, of a fixed sheet engaging end stop on said table at the lower part thereof, and a vertical tapping device associated with said end stop to operate upon the sheets in engagement therewith, said tapping device including a tapping member and tending to move downward, and means for intermittently raising and subsequently releasing said member.

5. In e sheet stacker, a support, a pair of pivoted tapping members extending diagonally across each other and having a slot and pin connection to permit simultaneous movement of said members about their pivots, and means for intermittently moving one of said members to raise its free end and subsequently releasing said members.

In Witness whereof, I have hereunto subscribed my name in the presence of two Witnesses.

EDWARD CHESHIRE. Witnesses: v-

, CHARLns Gr. Corn,

WALTER N. FLANAGAN. 

